# Karl Jacob — Author > Author of Fix Your Insulin. > Personal weight loss story, insulin research, metabolic health. ## Author Site - [About Karl Jacob](https://askkarljacob.com/#about) - [Media & Press](https://askkarljacob.com/#media) - [Press Kit](https://askkarljacob.com/assets/karl-jacob-press-kit.pdf) ## Book - [Fix Your Insulin](https://fixyourinsulin.com): 7 simple hacks to lose weight without hunger or counting calories